They're calling it "silent" because the wave follows a long period of unusually low COVID activity this fall, so many people ...

Challenge trials help researchers study immune responses. Skeptics still doubt the approach is worth the risks ...

Five years after the virus that causes COVID emerged in China it still holds some mysteries. The disease has killed an ...

The risk of respiratory syncytial virus, or RSV, is on the rise, along with that of other illnesses including the flu, stomach flu and COVID-19.

This is now the fourth year running with a summer rise of COVID ... However, we haven't seen that yet for COVID. Instead, we see influential viral mutations crop up every few months.

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As China continues to monitor an increase in cases of human metapneumovirus (HMPV), here's what you need to know about the ...

"These are things that, if we know they are on the rise ... to the CDC. With COVID-19, a person may experience symptoms anywhere from two to five days, and up to 14 days after infection.

As China experiences a rise in respiratory infections this winter, one little-known virus has gotten a lot of attention – and ...

With the acute phase of the Covid-19 pandemic fading even as the coronavirus ... By Pam Belluck Diarrhea, constipation, pain, bloating: We asked experts why the virus causes these issues and ...

Five years ago this week, the World Health Organization first learned about a cluster of viral pneumonia cases in China.

"We don’t really have a good sense as to how many people have COVID unless people end up in the hospital," she ... doubt that rates will continue to rise as people gather during the holidays ...